UE Parameter Switching for Overlapping Full- and Half-Duplex Scheduling
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Solution Overview
Problem
Existing wireless communication systems, particularly in 5G NR, lack efficient mechanisms for switching between full-duplex and half-duplex communication configurations, leading to reduced efficiency and performance during overlapping communication occasions.
Innovation Solution
Configuring wireless devices with overlapping communication occasions that include both full-duplex and half-duplex portions, using distinct parameter sets for each, allowing seamless switching between these modes to enhance spectrum efficiency and reduce latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the system uses a single parameter set for both full-duplex and half-duplex modes, then the device complexity is reduced, but the communication efficiency and performance during overlapping occasions deteriorate
Solution Approach 1:
The patent segments the parameter configuration into distinct sets: one parameter set optimized for full-duplex mode and another parameter set optimized for half-duplex mode. The system divides the communication resource occasions into full-duplex occasions and half-duplex occasions, applying the appropriate parameter set to each segment. This segmentation allows each parameter set to be optimized independently for its specific mode, resolving the contradiction between simplicity and efficiency.
Solution Approach 2:
The patent implements dynamic parameter switching where the system can transition between different parameter sets based on the operational mode. The UE is configured to switch between the full-duplex parameter set and half-duplex parameter set depending on whether the current occasion is a full-duplex occasion or half-duplex occasion. This dynamic adaptability enables the system to maintain optimal performance across different modes without requiring a single compromised parameter configuration.
2Productivity
If the system configures separate parameter sets for full-duplex and half-duplex modes, then the communication efficiency and performance are improved, but the device complexity and configuration overhead increase
Solution Approach 1:
The patent creates a universal parameter configuration framework that handles both full-duplex and half-duplex modes through a unified mechanism. The same RRC configuration structure and parameter switching logic are used regardless of the mode, making the system multi-functional. The UE uses the same procedures and configuration mechanisms for both modes, reducing the perceived complexity despite having separate parameter sets. The system achieves universality by applying consistent management principles across different operational modes.
Solution Approach 2:
The patent enables the UE to autonomously select and switch between parameter sets based on the occasion type without requiring complex network control for each switch. The UE self-manages the parameter configuration by identifying whether an occasion is full-duplex or half-duplex and automatically applying the appropriate parameter set. This self-service capability reduces the configuration overhead and simplifies the system operation while maintaining separate optimized parameter sets for each mode.
3Device complexity
If the system uses half-duplex mode for all occasions, then the device complexity is minimized, but the resource utilization and spectrum efficiency deteriorate
Solution Approach 1:
The patent applies local quality by assigning different operational characteristics to different time resources. Specific resource occasions are designated as full-duplex occasions where simultaneous transmission and reception are enabled, while other occasions are designated as half-duplex occasions. This local differentiation allows the system to maximize resource utilization during full-duplex occasions while maintaining simpler operation during half-duplex occasions, thereby increasing overall resource utilization without requiring full complexity continuously.
Solution Approach 2:
The patent implements periodic switching between full-duplex and half-duplex modes across different resource occasions. The system alternates between modes in a structured manner, with full-duplex occasions providing high resource utilization followed by half-duplex occasions that provide operational simplicity. This periodic alternation allows the system to achieve high average resource utilization while managing complexity through regular patterns rather than continuous complex operation.
4Loss of time
If the system switches parameters dynamically between full-duplex and half-duplex modes, then the latency is reduced and communication responsiveness is improved, but the device complexity and processing requirements increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring both the full-duplex parameter set and the half-duplex parameter set before actual communication occurs. The RRC configuration includes both parameter sets in advance, and the UE is pre-programmed with the switching logic to determine when to switch between modes. This preliminary preparation eliminates the need for complex real-time parameter negotiation and switching decisions, reducing latency while managing complexity through advance setup.
Solution Approach 2:
The patent implements parameter changes by transitioning between predefined parameter sets rather than dynamically generating new parameters. The system changes from one complete parameter configuration to another complete parameter configuration based on the occasion type. This approach to parameter changes simplifies the switching process compared to incremental parameter adjustment, as the UE simply selects between pre-defined sets rather than modifying individual parameters in real-time, thereby reducing switching complexity and latency.
Data Source
AI summary
Example aspects include a method, apparatus, and computer-readable medium for wireless communication at a user equipment (UE) of a wireless communication network, comprising receiving, from a base station, configuration information scheduling one or more receive occasions and one or more transmit occasions. A full-duplex portion of an overlapping occasion comprises a portion of a first receive occasion of the one or more receive occasions overlapping with a portion of a first transmit occasion of the one or more transmit occasions. A half-duplex portion of the overlapping occasion comprises a remaining portion of the first receive occasion or a remaining portion of the first transmit occasion. The aspects further include performing full-duplex communications during the full-duplex portion of the overlapping occasion using overlapping full-duplex associated parameters. Additionally, the aspects further include performing half-duplex communications during the half-duplex portion of the overlapping occasion using non-overlapping half-duplex associated parameters.